Nitrogen, Oxygen, Carbon dioxide and Argon are the primary elements that make up the Earth's atmosphere.
With argon, carbon dioxide, helium, neon, and other gases making up just trace amounts, nitrogen and oxygen make up 99 per cent of the gases in dry air. The atmosphere of Earth also contains dust and water vapor. Many of the gases in our atmosphere, according to scientists, were expelled into the atmosphere by early volcanoes. There would have been little to no free oxygen encircling Earth at that period.
The term "free oxygen" refers to oxygen atoms that are not joined to another element, such as carbon (to create carbon dioxide) or hydrogen (to create water). Primitive creatures, most likely bacteria, may have contributed free oxygen to the atmosphere during photosynthesis. A plant or other autotroph uses photosynthesis to convert carbon dioxide and water into food and oxygen.
Learn more about Earth's atmosphere here:
#SPJ3
2. would specialize in market gardening agriculture rather than other types of agriculture,
3.such as grain farming
A region can be defined as the land or the area of the land that has defined and categorized common features in it. It has a different language, culture, art, and sculpture.
The correct option is 1. located in the northeastern united states.
Option 1. located in the northeastern united states is correct because of the reason that it best explains the new England reg ion and also the art and culture of the united states.
The rest of the options or the remaining options are wrong because they do not best relate to the region or the art and culture of the United States.
To know more about the new England region, refer to the link below:
C. Liberia, Freetown (Sierra Leone), and Libreville (Gabon)
D. South Africa, Freeport, Libertyville
Answer:
m∠6
ANSWER:
110°; Sample answer: ∠2 and ∠6 are corresponding
angles, so they have the same measure
m∠7
ANSWER:
70°; Sample answer: ∠2 and ∠6 are corresponding
angles, so they have the same measure. ∠6 and ∠7
are supplementary. So, m∠7 = 180 – 110 or 70°.
Explanation:
hope this help :D
Answer:
African slaves were brought in the area to work on sugarcane plantations
Explanation:
African slaves were brought in the northeast region of South America by Portuguese for the plantation of sugarcane. The Portuguese were the first settlers to reach Brazil and to notice the fertile land and suitable climate to grow cash crops. Portuguese diplomat Pedro Álvares Cabral found Brazil in 1500, from there the settlers began to flow in the region. Slaves were the reason behind the growth of the sugar economy in Brazil.